Bruno Mars reclaims US singles top spot

Bruno Mars has reclaimed the top spot on the US Billboard singles chart with 'Grenade'.

The track, which marks his second solo single release, climbs back up a place, shifting Katy Perry's 'Firework' down to number two.

Elsewhere in the top ten, Rihanna's 'What's My Name?' advances from four to three, while 'Only Girl (In The World)' re-enters the top ten, leaping 12 to ten.

Further down the chart, Lil Wayne and Cory Gunz's '6 Foot 7 Foot' jumps from 17 to 12, while Pitbull and T-Pain's 'Hey Baby (Drop It To The Floor)' reaches a new peak on the chart at 22 from last week's 27.

Nicki Minaj's 'Moment For Life' vaults 63 to 51, Pink's 'F**kin' Perfect' re-enters at 57, and David Guetta and Rihanna's 'Who's That Chick?' lands at 85.